. 2013 Sep 13;8(9):e72731. doi: 10.1371/journal.pone.0072731

Table 1. Amount of variation in log₁₀ geographic range size explained as a linear function of log₁₀ mass in various groups of mammals and New World birds.

Group	No. species	% variation explained (R²)	Source
Amazonian primates	39	19	[137]
New World carnivores	70	9	[62]
Neotropical forest mammals	100	10	[138]
African large mammals^a	242	4	[139]
Carnivora	210	4.3	[8]^b
Primates	259	4.8	[8]^b
Rodentia	1,287	n.s.^c	[8]^b
Mammalia	3,268	n.s.	[8]^b
New World birds	2,908	1	[117]

Geographic range size was measured as squared area, except where noted. Only studies that measured the complete extent of geographic ranges, rather than partial or regional ranges, were included. Note the overall negative correlation between the number of species included in the study and amount of variation explained.

^a latitudinal extent was used as the measure of range size

^b calculated from all available data in the PanTHERIA database [8]

^c n.s. = not significant (p > 0.05)

Table 1. Amount of variation in log10 geographic range size explained as a linear function of log10 mass in various groups of mammals and New World birds.

Table 1. Amount of variation in log₁₀ geographic range size explained as a linear function of log₁₀ mass in various groups of mammals and New World birds.